Insulated handle for electrical apparatus.



No. 635,006. Patented Oct. I7, I899. J. J.. WALSH.

INSULATED HANDLE FOR ELECTRICAL APPARATUS.

(Application filed Max. 10, 1899.)

(No Model.)

WITNESSES QM Mex 2%)? A TTORNEYJ FFlCFt JOHN J. \VALSH, OF YONKERS, NEW YORK.

INSULATED HANDLE FOR ELECTRICAL APPARATUS.

SPECIFICATION forming part of Letters Iatent N0. 635,006,.dated October 17', 1899.

Application filed March 10,1899- TO CI/ZL'LUh/OTIL it may concern:

Be it known that 1, JOHN J. WALSH, a citizen of the United States, residing at Yonkers, in the county of Westchesterand State of New York, have invented certain new and useful Improvements in Insulated Handles or Grips for Electrical Apparatus, of which the following is afull and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to the controllingshafts of rheostats and other electrical apparatus; and the object thereof is to provide an improved handle or grip for shafts of this class and improved means for connecting the same with the shaft.

The invention is fully dislosed in the following specification, of which the accompanying drawings form a part, in which- Figure 1 is a sectional side view of a shaft provided with my improvement; Fig. 2, a section on the line 2 2 of Fig. 1, and Fig. 3 an end view looking in the direction of the arrow 8 of Fig. 1.

In the drawings forming part of this specification the separate parts of my improvement are designated by the same numerals of reference in each of the views, and in said drawings I have shown at 5 the shaft for ma nipulating or managing rheostats or other electrical apparatus, and in the practice of my invention I mount on said shaft an insulating-hub consisting of twosimilar parts 0 and 7, preferably composed of porcelain, but which may be composed of hard rubber or any suitable material, and these parts are connected by bolts 8, the heads of which are countersunk in the part 7. The outer ends of the bolts 8 are screw-threaded, and I also provide a handle or grip consisting of a ring 9, provided with a spider consisting of a central hub 10 and outwardly-curved arms 11. The hub 10 of the spider is provided with a central cavity or recess 12, into which the end of the shaft 5 projects, and the screw-threaded ends of the bolts 8 are screwed into the hub 10, as clearly shown in Fig. 1.

Mounted between the parts 6 and 7 of the insulating-hub, at one side thereof, is a tubular bearing 13, having a flat head 14, and said bearingis securely held in place by the parts 6 and 7 of the hub, and passed through said Serial No. 708,522. (No model.)

bearing is a set-screw 15, the head of which is countersunk in the insulating-hub, and said screw is adapted to bear on the shaft 5 and to secure the insulatinghub and the handle or grip 9 thereto. Mounted in the opposite side of the insulating-hub and held in place by the separateparts 6 and 7 thereof is a pointer 16, the larger end of which is wedgeshaped in form and fitted between the parts 6 and 7 of the insulatinghub, and in practice said pointer operates in connection with or moves over a scale-plate 17, secured to the casing 18 of the rheostat or other electrical apparatus,-as shown in Fig.

The handle or grip consisting of the ring 0 and the spider with which it is connected are preferably formed separately, and the ends of the arms 11 of the spider are countersunk into said ring, and preferably insulated there.

from, as shown at 19, and said arms and said ring are connected by screws or bolts 20.

By forming the spider and the ring 9, which constitutes the handle or grip, separately I am enabled to more completely insulate said Having fully described my invention, I

claim as new and desire to secure by Letters Patent- 1. An insulating-hub for the shafts of rheostats and other electrical apparatus, consisting of two separate parts of insulating material bolted together and keyed to said shaft, substantially as shown and described.

2. An insulating-hub for the shafts of rheostats and other electrical apparatus, consisting of two separate parts of insulating material bolted together and keyed to said shaft, said hub being provided'with a handle or grip which is secured thereto, substantially as shown and described.

3. An insulating-hub for the shafts of rheostats and other electrical apparatus consist ing of two separate parts of insulating material bolted together and keyed to said shaft, said hub being provided with a handle or grip which is secured thereto, and with a pointer which is secured between the separate parts thereof at one side, substantially as shown and described.

4. A controllingshaft for rlieostats and other electrical apparatus provided with an insulating-hub which is secured thereto, a spiderconnected with the insulating-hub, and provided with outwardly-directed arms, and a handle or grip connected with said arms, substantially as shown and described.

5. A controlling-shaft for rheostats an other electrical apparatus provided with an insulating-hub which is secured thereto, a spider connected with the insulating-hub, and

. provided with outwardly-directed arms, and

of March, 1899.

insulating-hub composed of two parts bolted together and secured to said shaft, and provided at one side with a pointer, and a handle or grip connected with said hub by the bolts by which the parts of said hub are'connected',

1 substantially as shown and described.

7. The combination with the operatingshaft of a rheostat or other electrical appa ratus, of an insulating-hub keyed thereto and composed of two separate parts of insulating material bolted together, a spider provided with a central hub which is bolted to said insulating hub and with outwardly directed arms, and a handle or grip consisting of a ring secured to said arms, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presenceof the subscribing witnesses, this 8th day JOHN J. WALSH. Witnesses: P. H. REORDEN,

CHARLES A. VALENTINE, Jr. 

